Yazmendra Rosa
Jurusan Teknik Mesin Politeknik Negeri Padang

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Journal : Jurnal Ilmiah Poli Rekayasa

Kaji Eksperimental Penyimpan Panas Sementara dari Hasil Udara Panas Keluaran Kolektor Energi Surya Rosa, Yazmendra; Menhendry, Menhendry; Zulhendri, Zulhendri
POLI REKAYASA Vol 4, No 1 (2008)
Publisher : POLI REKAYASA

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Temporary heat storage from heat air solar collector source has been studied in this experiment. Paraffin, as phase change material (PCM) is used as a working object in storage system. The heat air transfer is enhanced from the heat exchanger, a numbers of fin aluminum plates, which caused increasing of heat transfer. These varieties mass flow rates and some exchangers solar energy such as heater electric and solar energy, were examined by using power supply fan DC (3V, 6V, 7,5V, 9V), and heater (350W, 700W, 900W, 1600W). Storage system and channel are isolated by glass wool, so heat transfer to surroundings could be minimizes. Storage capacity PCM is by melting time is 4 hours and 28,2 minutes in temperature melting. Experimental data acquisition research shows that it’s have the same average temperature distribution. The PCM can be function about 5oC on source heater energy and about 1oC from experimental solar collector.  The average efficiency from solar collector storage system is about 16,39% and Coefisien of Performance is 1,13. So based on ths experiment,  storage PCM solar colector system can be used as heat storage by increased source heat air and restore on it, and can be used again  after heat air source decreased.
pengeringan Gambir dengan Memanfaatkan Energi Surya Rosa, Yazmendra; Maimuzar, Maimuzar; Nasrullah, Nasrullah
POLI REKAYASA Vol 2, No 1 (2006)
Publisher : POLI REKAYASA

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Abstract

The Gambier drying system of solar dryer has been studied. Solar Energy represent the source of energy, which is available in nature, unpollutive, free of charge and also continue all day long. The research Gambier drying was main problems. The Gambier drying has been conducted after cropping boiling and extortion of rubber of Gambier. The equipment absorber of zinc materials has solar radiation collector. It was used to removing heat into air emitting a stream of in it. This high temperature air has been flow through dryer room. Scheme of this appliance exploited situation of environment that is a designed house as solar dryer system. Result of research obtained air temperature in dryer room (T= 60oC,Tmean= 56,56oC) with cloudy weather condition. Drying area could been lessen by drying vertically. Distribution temperatures in dryer room earn uniform and could dry Gambier simultaneously. Temperature mean in every rack enough flatten except lowermost rack such as T1mean= 40,64oC, T2mean = 39,79oC, T3mean = 39,21oC, T4mean = 36,61oC, at cloudy weather condition